SCSNSCSN http://www.scsn.org Southern California Seismic Network Fri, 17 May 2019 20:02:35 +0000 en-US hourly 1 https://wordpress.org/?v=5.1.1 05/08/2019, M3.5 near Ocotillo Wells ../../index.php/2019/05/08/05-08-2019-m3-5-near-ocotillo-wells/ ../../index.php/2019/05/08/05-08-2019-m3-5-near-ocotillo-wells/#respond Wed, 08 May 2019 20:53:33 +0000 http://www.scsn.org/?p=3154 ]]> Event

  • 08 May 2019 09:14:59 PDT, (33.213, -116.067), depth 10.6km.
  • 10km NE of Ocotillo Wells, California

Aftershocks

  • As of 17 May 2019, 12:08PM PDT, there have been 11 aftershocks recorded.
  • The largest was M1.3 (smallest M0.8).
  • More aftershocks may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock.
  • There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.

Possible Foreshocks

  • There were 4 events during the 3 days prior to the earthquake (within a 10 km radius).
  • The largest was M1.7 (2019/05/06).

Historical Seismicity

  • Since our records began in 1932 we’ve had 55 events of M4 or greater within 10km of today’s event.
  • The largest historic event was M6.6 on 1968/04/09.
  • The most recent historic event was M4.3 on 09 Feb 2007.

Faults

  • CFM fault associations: most likely Clark fault; south segment (87.6%). Alternates: Not associated with a CFM modeled fault (4.1%), Other CFM faults (8.3%).*
  • Nearby faults: San Jacinto fault zone, Borrego Mountain section (Coyote Creek fault) (8.7 km), San Jacinto fault zone, Anza section (Clark fault) (10.1 km) and San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (12.5 km).**

Additional Information


Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.


*Earthquakes can occur both near or on major known faults, and in places where no clear fault zones are known. Using the statistical method of Evans et al. (in prep. 2019) the location and focal mechanism of this earthquake suggest the above association with modeled faults in the Community Fault Model (CFM) provided by the Southern California Earthquake Center (SCEC) and Harvard University. Note that the CFM fault association may be different from the nearby faults list. Differences may arise due to different fault databases, and because the CFM fault association uses the hypocenter with relation to subsurface 3-dimensional fault orientation models, while the nearby faults list utilizes mapped surface traces as they relate to the epicenter.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

**U.S. Geological Survey and California Geological Survey, 2006, Quaternary fault and fold database for the United States, accessed 2015, from USGS web site: https://earthquake.usgs.gov/hazards/qfaults/

This information is subject to change as more up-to-date data become available.

]]>
../../index.php/2019/05/08/05-08-2019-m3-5-near-ocotillo-wells/feed/ 0
04/22/2019, M3.7 near Imperial ../../index.php/2019/04/23/04-22-2019-m3-7-near-imperial/ ../../index.php/2019/04/23/04-22-2019-m3-7-near-imperial/#respond Tue, 23 Apr 2019 05:05:07 +0000 http://www.scsn.org/?p=3111 ]]>
  • 22 Apr 2019 20:24:03 PDT, (32.903, -115.512), depth 17.0km, 8km NE of Imperial, California
  • Aftershocks: so far (17 May 2019, 08:37AM PDT) there have been 46 aftershocks recorded, the largest M2.9 (smallest M1.0). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • There were 4 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M2.2 (2019/04/23).
  • Historical seismicity: since our records began in 1932 we’ve had 92 events of M4 or greater within 10km of today’s event, the largest was M6.9 (1940/05/19) and the most recent was M4.2 on 28 Aug 2012.
  • CFM fault associations: most likely Imperial fault; Edip segment (28.9%). Alternates: Not associated with a CFM modeled fault (19.7%), Other CFM faults (51.4%).*
  • Nearby faults: Imperial fault (2.7 km), Brawley seismic zone (Brawley fault zone) (3.0 km), Brawley seismic zone (4.2 km), San Jacinto fault zone, Superstition Hills section (Wienert fault) (12.3 km), San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (13.9 km) and Brawley seismic zone (Rico fault) (14.7 km).**
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    *Earthquakes can occur both near or on major known faults, and in places where no clear fault zones are known. Using the statistical method of Evans et al. (in prep. 2019) the location and focal mechanism of this earthquake suggest the above association with modeled faults in the Community Fault Model (CFM) provided by the Southern California Earthquake Center (SCEC) and Harvard University. Note that the CFM fault association may be different from the nearby faults list. Differences may arise due to different fault databases, and because the CFM fault association uses the hypocenter with relation to subsurface 3-dimensional fault orientation models, while the nearby faults list utilizes mapped surface traces as they relate to the epicenter.

    CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

    Probability: The probability in percent the earthquake is associated with this fault.

    SCSN: Caltech/USGS Southern California Seismic Network

    **U.S. Geological Survey and California Geological Survey, 2006, Quaternary fault and fold database for the United States, accessed 2015, from USGS web site: https://earthquake.usgs.gov/hazards/qfaults/

    This information is subject to change as more up-to-date data become available.

    ]]>
    ../../index.php/2019/04/23/04-22-2019-m3-7-near-imperial/feed/ 0
    04/03/2019, M3.6 near Yorba Linda ../../index.php/2019/04/03/04-03-2019-m3-6-near-yorba-linda/ ../../index.php/2019/04/03/04-03-2019-m3-6-near-yorba-linda/#respond Wed, 03 Apr 2019 15:33:04 +0000 http://www.scsn.org/?p=3092 ]]>
  • 03 Apr 2019 05:06:22 PDT, (33.867, -117.728), depth 4.8km, 8km ESE of Yorba Linda, California
  • Aftershocks: so far (17 May 2019, 08:40AM PDT) there have been 26 aftershocks recorded, the largest M2.6 (smallest M0.9). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • There were 1 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M1.2 (2019/04/02).
  • Historical seismicity: since our records began in 1932 we’ve had 13 events of M4 or greater within 10km of today’s event, the largest was M5.4 (2008/07/29) and the most recent was M4.1 on 29 Mar 2014.
  • CFM fault associations: most likely Peralta Hills fault (63.9%). Alternates: Not associated with a CFM modeled fault (8.2%), Other CFM faults (27.9%).*
  • Nearby faults: Elsinore fault zone, Whittier section (Whittier fault) (1.5 km), Peralta Hills fault (5.0 km), El Modeno fault (7.7 km), Elsinore fault zone, Chino section (Chino fault) (8.0 km), Elsinore fault zone, Glen Ivy section (Tin Mine fault) (8.2 km), Elsinore fault zone, Glen Ivy section (Main Street fault) (11.1 km) and Elsinore fault zone, Glen Ivy section (Glen Ivy North fault) (13.4 km).**
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    *Earthquakes can occur both near or on major known faults, and in places where no clear fault zones are known. Using the statistical method of Evans et al. (in prep. 2019) the location and focal mechanism of this earthquake suggest the above association with modeled faults in the Community Fault Model (CFM) provided by the Southern California Earthquake Center (SCEC) and Harvard University. Note that the CFM fault association may be different from the nearby faults list. Differences may arise due to different fault databases, and because the CFM fault association uses the hypocenter with relation to subsurface 3-dimensional fault orientation models, while the nearby faults list utilizes mapped surface traces as they relate to the epicenter.

    CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

    Probability: The probability in percent the earthquake is associated with this fault.

    SCSN: Caltech/USGS Southern California Seismic Network

    **U.S. Geological Survey and California Geological Survey, 2006, Quaternary fault and fold database for the United States, accessed 2015, from USGS web site: https://earthquake.usgs.gov/hazards/qfaults/

    This information is subject to change as more up-to-date data become available.

    ]]>
    ../../index.php/2019/04/03/04-03-2019-m3-6-near-yorba-linda/feed/ 0
    02/07/2019, M4.0 near Ludlow ../../index.php/2019/02/07/02-07-2019-m4-0-near-ludlow/ ../../index.php/2019/02/07/02-07-2019-m4-0-near-ludlow/#respond Thu, 07 Feb 2019 22:36:44 +0000 http://www.scsn.org/?p=3064 ]]>
  • 07 Feb 2019 08:41:24 PDT, (34.703, -116.287), depth 1.6km, 12km W of Ludlow, California
  • Aftershocks: so far (17 May 2019, 08:43AM PDT) there have been 81 aftershocks recorded, the largest M4.0 (smallest M0.4). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • There were 13 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M3.2 (2019/02/07).
  • Historical seismicity: since our records began in 1932 we’ve had 62 events of M4 or greater within 10km of today’s event, the largest was M7.1 (1999/10/16) and the most recent was M4.1 on 23 Feb 2016.
  • CFM fault associations: most likely Hector Mine rupture dipping (91.6%). Alternates: Not associated with a CFM modeled fault (7.9%), Other CFM faults (0.5%).*
  • Nearby faults: Unnamed fault east of Pisgah (5.1 km), Lavic Lake fault zone (Lavic Lake fault) (5.8 km), Pisgah-Bullion fault zone, Pisgah section (Pisgah fault) (9.8 km), Lavic Lake fault zone (10.5 km), Ludlow fault (11.1 km) and Pisgah-Bullion fault zone, Bullion section (Bullion fault) (12.9 km).**
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • *Earthquakes can occur both near or on major known faults, and in places where no clear fault zones are known. Using the statistical method of Evans et al. (in prep. 2019) the location and focal mechanism of this earthquake suggest the above association with modeled faults in the Community Fault Model (CFM) provided by the Southern California Earthquake Center (SCEC) and Harvard University. Note that the CFM fault association may be different from the nearby faults list. Differences may arise due to different fault databases, and because the CFM fault association uses the hypocenter with relation to subsurface 3-dimensional fault orientation models, while the nearby faults list utilizes mapped surface traces as they relate to the epicenter.

    CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

    Probability: The probability in percent the earthquake is associated with this fault.

    SCSN: Caltech/USGS Southern California Seismic Network

    **U.S. Geological Survey and California Geological Survey, 2006, Quaternary fault and fold database for the United States, accessed 2015, from USGS web site: https://earthquake.usgs.gov/hazards/qfaults/

    This information is subject to change as more up-to-date data become available.

    ]]>
    ../../index.php/2019/02/07/02-07-2019-m4-0-near-ludlow/feed/ 0
    01/29/2019, M3.6 near Lucerne Valley ../../index.php/2019/01/30/01-29-2019-m3-6-near-lucerne-valley/ ../../index.php/2019/01/30/01-29-2019-m3-6-near-lucerne-valley/#respond Wed, 30 Jan 2019 02:51:34 +0000 http://www.scsn.org/?p=3061 ]]>
  • 29 Jan 2019 18:40:12 PST, (34.408, -116.892), depth -0.5km, 8km ESE of Lucerne Valley, California
  • Aftershocks: so far there have been no aftershocks recorded. Some may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • Historical seismicity: since our records began in 1932 we’ve had 53 events of M4 or greater within 10km of today’s event, the largest was M5.3 (1992/11/27) and the most recent was M4.6 on 05 Jul 2014.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • ]]>
    ../../index.php/2019/01/30/01-29-2019-m3-6-near-lucerne-valley/feed/ 0
    01/22/2019, M3.6 near Brawley ../../index.php/2019/01/23/01-22-2019-m3-6-near-brawley/ ../../index.php/2019/01/23/01-22-2019-m3-6-near-brawley/#respond Wed, 23 Jan 2019 21:27:35 +0000 http://www.scsn.org/?p=3060 ]]>
  • 22 Jan 2019 00:24:44 PST, (32.947, -115.515), depth 15.4km, 4km SSE of Brawley, California
  • Aftershocks: so far (23 Jan 2019, 01:22PM PST) there have been 12 aftershocks recorded, the largest M2.7 (smallest M1.1). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • There were 1 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M3.1 (2019/01/22).
  • Historical seismicity: since our records began in 1932 we’ve had 93 events of M4 or greater within 10km of today’s event, the largest was M6.9 (1940/05/19) and the most recent was M4.2 on 28 Aug 2012.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    ]]>
    ../../index.php/2019/01/23/01-22-2019-m3-6-near-brawley/feed/ 0
    01/16/2019, M3.9 near Niland ../../index.php/2019/01/17/01-16-2019-m3-9-near-niland/ ../../index.php/2019/01/17/01-16-2019-m3-9-near-niland/#respond Thu, 17 Jan 2019 03:30:43 +0000 http://www.scsn.org/?p=3055 ]]>
  • 16 Jan 2019 18:41:34 PST, (33.182, -115.608), depth 2.9km, 10km SW of Niland, California
  • Aftershocks: so far (16 Jan 2019, 07:29PM PST) there have been 3 aftershocks recorded, the largest M2.9 (smallest M1.6). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • There were 3 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M2.2 (2019/01/14).
  • Historical seismicity: since our records began in 1932 we’ve had 75 events of M4 or greater within 10km of today’s event, the largest was M6.2 (1987/11/24) and the most recent was M4.1 on 27 Sep 2016.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    ]]>
    ../../index.php/2019/01/17/01-16-2019-m3-9-near-niland/feed/ 0
    12/05/2018, M4.2 near Trona ../../index.php/2018/12/05/12-05-2018-m4-2-near-trona/ ../../index.php/2018/12/05/12-05-2018-m4-2-near-trona/#respond Wed, 05 Dec 2018 22:12:16 +0000 http://www.scsn.org/?p=3041 ]]>
  • 05 Dec 2018 13:40:17 PST, (35.735, -117.077), depth 4.4km, 28km E of Trona, California
  • Aftershocks: so far (05 Dec 2018, 02:32PM PST) there have been 3 aftershocks recorded, the largest M3.7 (smallest M1.1). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • Historical seismicity: since our records began in 1932 we’ve had 1 event of M4 or greater within 10km of today’s event, the M4.8 on 24 Nov 1953.
  • Nearby faults: Panamint Valley fault zone, southern Panamint Valley section (1.3 km), Panamint Valley fault zone, Brown Mountain section (2.9 km), Panamint Valley fault zone, Brown Mountain section (Brown Mountain fault) (9.4 km) and Tank Canyon fault (13.3 km).
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    ]]>
    ../../index.php/2018/12/05/12-05-2018-m4-2-near-trona/feed/ 0
    11/29/2018, M3.9 near Ocotillo Wells ../../index.php/2018/11/29/11-29-2018-m3-9-near-ocotillo-wells/ ../../index.php/2018/11/29/11-29-2018-m3-9-near-ocotillo-wells/#respond Thu, 29 Nov 2018 14:32:02 +0000 http://www.scsn.org/?p=3039 ]]>
  • 29 Nov 2018 05:48:53 PST, (33.015, -115.983), depth 11.4km, 20km SE of Ocotillo Wells, California
  • Aftershocks: so far there have been no aftershocks recorded. Some may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • Historical seismicity: since our records began in 1932 we’ve had 59 events of M4 or greater within 10km of today’s event, the largest was M6.6 (1987/11/24) and the most recent was M4.6 on 04 Nov 2010.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

    ]]>
    ../../index.php/2018/11/29/11-29-2018-m3-9-near-ocotillo-wells/feed/ 0
    11/19/2018, M4.8 near Alberto Oviedo Mota ../../index.php/2018/11/20/11-19-2018-m4-8-near-alberto-oviedo-mota/ ../../index.php/2018/11/20/11-19-2018-m4-8-near-alberto-oviedo-mota/#respond Tue, 20 Nov 2018 16:31:13 +0000 http://www.scsn.org/?p=3037 ]]>
  • 19 Nov 2018 12:18:42 PST, (32.207, -115.253), depth 10.9km, 8km WSW of Alberto Oviedo Mota, B.C., Mexico
  • Aftershocks: so far (20 Nov 2018, 08:29AM PST) there have been 11 aftershocks recorded, the largest M3.5 (smallest M2.2). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • Historical seismicity: since our records began in 1932 we’ve had 124 events of M4 or greater within 10km of today’s event, the largest was M7.2 (2010/04/04) and the most recent was M4.4 on 29 Sep 2018.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • ]]>
    ../../index.php/2018/11/20/11-19-2018-m4-8-near-alberto-oviedo-mota/feed/ 0